// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_GL_GL_CONTEXT_CGL_H_
#define UI_GL_GL_CONTEXT_CGL_H_

#include <OpenGL/CGLTypes.h>

#include "base/macros.h"
#include "ui/gl/gl_context.h"

namespace gfx {

class GLSurface;

// Encapsulates a CGL OpenGL context.
class GLContextCGL : public GLContextReal {
public:
    explicit GLContextCGL(GLShareGroup* share_group);

    // Implement GLContext.
    bool Initialize(GLSurface* compatible_surface,
        GpuPreference gpu_preference) override;
    bool MakeCurrent(GLSurface* surface) override;
    void ReleaseCurrent(GLSurface* surface) override;
    bool IsCurrent(GLSurface* surface) override;
    void* GetHandle() override;
    void OnSetSwapInterval(int interval) override;
    void SetSafeToForceGpuSwitch() override;
    bool ForceGpuSwitchIfNeeded() override;

protected:
    ~GLContextCGL() override;

private:
    void Destroy();
    GpuPreference GetGpuPreference();

    void* context_;
    GpuPreference gpu_preference_;

    CGLPixelFormatObj discrete_pixelformat_;

    int screen_;
    int renderer_id_;
    bool safe_to_force_gpu_switch_;

    DISALLOW_COPY_AND_ASSIGN(GLContextCGL);
};

} // namespace gfx

#endif // UI_GL_GL_CONTEXT_CGL_H_
